Reversing-gearing.



4 SHEETS-SHEET I.

Patented Nov. 7, 1916.

H. A. TUTTLE.

REVERSING (BEARING.

APPLICATION FILED OCT. 19. 1914.

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W'Zzaeases: Q Z) f H. A. TUTTLE.

REVERSING GEARING.

APPLICATION FILED OCT. 19. 1914.

1 4,379. Patented Nov. 7, 1916.

4 SHEETS-SHEET 2.

9 Q Zlw Q I a Q M gw c Q I 30% 1,2(94579. Patented Nov. 7, 1916.

H. A. TUTTLE REVERSING GEARING.

APPLICATION FILED OCT. 19, 1914.

, 50 4SHEETSSHEET 3.

H. A. TUTTLE.

REVERSING (BEARING.

APPLICATION FILED OCT. 19. 1914.

1 2M379. Patented Nov. 7, 1916.

4 SHEETSSHEET 4.

/ L Cw UNITED STTES PATENT @FFM).

HENRY A. TUTTLE, OF TAUNTON, MASSACHUSETTS, ASSIG-NOR TO EVANS STAMPING &

PLATING COMPANY, OF TAUNTON, MASSACHUSETTS, A CORPORATION OF MASSA- CHUSETTS.

REVERSING-GEARING.

Specification of Letters Patent.

Patented Nov. 7, 1 916.

To all whom it may concern:

Be it known that I, HENRY A. TUTTLE, a citizen of the United States, residing at Taunto-n, in the county of Bristol and State of Massachusetts, have invented an Improvement in Reversing-Gearing, of which the following is a specification.

. My present invention relates to reversinggearing, and is more particularly intended as an improvement upon the reversinggearings disclosed in Letters Patents, granted to me November 11, 1913, #1,078,565, and Jan. 18, 1916, #1,168,762.

In the art of reversing-gearings it has been considered an advance feature to provide a single operating-lever, whereby a driven-shaft will be caused, through the medium of the reversing-gearing, to remain idle .or caused to rotate in a forward or backward direction. In such reversinggearings the mechanism for connecting the operating-lever with the gearing usually extends ,beyond the casing inclosing the gearing, making a bulky and cumbersome structure, and it is an object of this invention to provide a compact operatingmechanism for the reversing-gearing, which is inclosed within the gearing-casing and which may be easily and readily operated. a A further object of the present invention is to provide a casing for the reversing-gearing and the operating-mechanism, adapted to completely inclose the same, which may be readily assembled or taken apart in repairing any of the parts of the gearing or oper ating-mechanism.

Another object of the present invention is to provide an inclosing-casing of the charae ter aforesaid, which will hold grease for properly lubricating the gearing and operating-mechanism and also protect the same from water, dirt, and other foreign matter which would affect their operation.

A still further object of the present invention is to provide means for adjusting the operating-mechanism, to take up wear, which adjusting means is readily accessible.

In Patent #1,07 8,565 before mentioned, I

have provided a brake-mechanism for causing reverse drive, which comprises a plurality of axially movable clutch-plates, having teeth on their edges, some of said plates engaging grooves formed within the casing and others engaging grooves provided in the hub of the pinion-carrier. The manufacture of the grooves or key-ways upon the hub of the pinion-carrier is expensive, and, therefore, it is another object of the present invention to provide a connection between the pinion-carrier and those clutch-plates adapted for engagement therewith which will avoid the use of grooves or key-ways upon the hub of the pinion-carrier.

In the accompanying drawings Figure 1 is a longitudinal vertical section of a reversing-gearing embodying this invention, the shafts thereof being operatively connected for forward drive. Fig. 2 is a longitudinal vertical section of the casing, showing the reversing-gearing in elevation and in position for reverse drive, the operating-mechanism thereof being shown in dotted position when in neutral position. Fig. 3 is a vertical transverse section taken on the line 33 of Fig. 1. Fig. 4 is a similar section taken on the line 4.4 of Fig. 1. Fig. 5 is a detail transverse section taken on the line 5-5 of Fig. 1. Fig. 6 is a detail sectional view. Fig. 7 is a section showing the gearing in position upon the engine-bed, and, Fig. 8 is a detail plan view of one of the supporting-brackets. Fig. 9 is a modification to be referred to.

In the accompanying drawings is illustrated one form of reversing-gearing to which my invention is applicable, it comprising the drivin -shaft a, spur-gear a secured to it, having at one side an elongated hub a and at the opposite side a short hub (1., said shaft terminating approximately flush with the end of said short hub a, several pinions Z), arranged planetarily to said spur-gear and in mesh therewith, four being here shown, and studs 7) with bushings b thereon, on which the pinions freely rotate, the end-wall b of the pinion carrier to which the studs Z)" are fixed and bushing f interposed between the end-wall and the hub (L2 of the spur-gear, and extended from side to side of it, said bushing having on its inner end an outwardly extending flange which occupies a position between the wall If and spur-gear a, the plate 0, mounted on the hub (t and shaped to afford bearings for the inner ends of the fixed studs b. The pinions 7) also engage the teeth of an internal-gear d, having a hub (l which is keyed upon the driven-shaft v, The driven-shaft c, terminates substantially flush with the inner face of the crown of the internal-gear. The driven-shaft is adapted to be rotated either forward or backward, or may remain idle; and the internal gear is the element here shown as secured thereto which is correspondingly moved; as, forinstance, when the pinions are rotated about their axes in a direction opposite to the direction of rotation of the spur-gear said internal-gear will be rotatedbackward or in a direction opposite to the direction of rotation of the driving-shaft, and when said pinions are revolved about the axis of the driving-shaft with and by the spur-gear in the same direction in which said spur-gear is rotating, said internal-gear will be rotated forward or in the direction of rotation of the drivingshaft, and when said pinions are rotated about their axes, and also revolved about the axis-of the driving-shaft, said internal-gear will remain idle.

The internal-gear loosely fits the interior of the cylindrical portion f, of the pinioncarrier, and said gear is free to'rotate independently of the pinion-carrier, or it may rotate with said pinion-carrier according to whether it is disconnected from or connected with said carrier, and, herein, a clutch-mechanism is provided for connecting said internal-gear and pinion-carrier which is very powerful, and which may be easily and readily operated.

The clutch-mechanism comprises a plurality of axially movable annular clutchplates 47, 48 arranged in a space between the pinion-carrier and the hub of the internalgear. As here shown, the hub d of the internal-gear forms a support for some of the annular clutch-disks or plates, and the portion f of the pinion-carrier forms a support for others. All of the clutch-plates are ar ranged for movement axially. Said plates are made as flat rings having both sides formed with friction surfaces. The clutchplates 47 are formed with teeth 49 on their inner edges, which are slidably received in correspondingly located grooves or keyways formed on the exterior of the hub d and extending longitudinally thereof, and are therefore rotatable therewith, as well as movable axially, and the clutch-plates 48 are formed with teeth 52 on their outer edges, which are slidably received in correspondingly located grooves or keyways 53 formed in the interior of the cylindrical portion f, of the inclosing-case, and extend longitudinally' thereof, and are, therefore, rotatable therewith, as Well as movable axially. The plates-47 and 48- may be arranged alternately. Said plates are adapted to be pressed together to frictionally connect the pinion-carrier with the internal-gear, and hence with the driven-shaft e, by means which will be later described, and when the pressure is relieved, said pinion-carrier will be 'disconnected from the internal-gear and hence from the driven-shaft.

While this particular form and arrangement of elements adapting the reversinggearing for forward drive has many advantages, yet so far as many features of my present invention are concerned, I do not desire to limit it ,to this particular structure and arrangement, as for instance the clutchmechanism may be employed-to connect any other element associated with the drivingshaft with another element associated with the driven-shaft, or by the clutch-mechanism a direct connection may be established between said shafts. V v

The reversing-gearing in addition to having means for connecting the driven-shaft c with the drive-shaft, whereby said drivenshaft is rotated by thedrivingsh'aft in the same direction for forward drive, is also designed to connect the driven-shaft 0, with the driving-shaft, whereby said driven-shaft e, is rotated by the driving-shaft in the opposite direction for reverse drive, and in such case, a brake-mechanism is provided. This brake-mechanism is herein designed to be operated to arrest the pinion-carrier, and when arrested, the intermediate gears or pinions are rotated on their own axes by .the spur-gear, instead of being moved planetarily about said gear, and the internal-gear is rotated by them and the driven-shaft is rotated in a direction opposite to the direction of rotation of the driving-shaft. The brake-mechanism here shown comprises clutch-plates 16, 17, and 1,8 forming a set, which are non-rotatable and have teethformed in their outer edges, which are longitudinally movable in corresponding grooves formed in the gear-casing. The clutchplates 22, 23, and 24, of another set are interposed between the plates 16, 17, and 18, and are adapted to be frictionally engaged by the last-named plates to stop their rotation. The plates 22, 23, and 24., are connected with the pinion-carrier by means which will be later described.

The foregoing parts are well known and have heretofore been described in the aforesaid patents.

The reversing-gearing and operating parts are entirely inclosed within a casing, whereby the various parts of the gearing and operating-mechanism may be properly protected and this also prevents water, dust, and other foreign matter from coming into contact with the workingparts and interfering with their operation. This casing comprises a cylindrical Wall, 1, and end-walls 2, and 3, which are connected to the cylindrical wall by means of bolts 4. Supported upon the casing is a supplemental casing 5, having a cover 6, and in which is mounted part of the operating-mechanism. The shafts a and e are supported within bearings-formed within the end-walls of the casing, and a bushing 7 is interposed between the hub a of the spurgear and the bearing 8 formed by the endwall 2. j

The frictionplates'22, 23, and 24, of the brake-mechanism, rest upon the hearing 8, and have formed therein, adjacent their inner edges, a plurality of alining openings 9,

through-which project pins 10, carried by.

the several plates of the two sets are brought into contact they frictionally engage each other, and the plates 22, 23, and 24, are prevented from rotation by the stationary plates 16, 17, and 18, and in turn the pinion-carrier is prevented from rotation, and reverse direction of'rotation of the shaft 6 is effected.

Encircling the pinion-carrier is an actuating-ring 21, which is movable for the purpose ofexerting an endwise force upon the friction-plates to move them axially and cause them to frictionally engage each other, and to accomplish this result, the lower end of said actuating-ring 21, rests on the inner wall of the casing against a boss 35, formed on the interior of said casing, which serves as a fulcrum, and the upper end of said ring is adapted to be oscillated by means of a rock-arm or lever 25. The upper end of the ring 21, terminates in outwardly projecting arms 13, which are connected by means of a cross-bar 14, in which is adjustably mounted a screw 15. Pivotallv mounted, as at 16, is a bracket 27, in which is journaled a roller 28, adapted to normally rest within the path of the roller 29, carried by the rock arm. By oscillating the rock-arm until the roller carried thereby engages the roller carried by the ring, an endwise thrust will be given to the brake-mechanism, causing the same to be thrown into operation and in turn arrest the pinion-carrier from rotation, thereby re.- versing the direction of drive of the drivenshaft. Or in lieu thereof, a link 29 may be loosely arranged on the pin bearing the roll 29,.whichhas a bifurcated end-portion arranged to receive the pin bearing the roll 28, and permit said pin to work between the arms of the bifurcated portion, as illustrated in the modification Fi 9. Vhen the actuating-ring 21 is released, the compressed friction-plates exert a force tending to move the ring to the right or normal position thus releasing the plates, whereupon the pinioncarrier will be released and is free to rotate.

A threaded opening is formed within the cover 6, of the casing and is provided with a threaded plug 30, whereby access may be gained into the casing to adjust the screw 15, in moving the bracket 27, whereby any wear upon the rollers 28 and 29 mav be taken up; or the link 29 of Fig. 9 may be adjusted.

The rock-lever 25, is pivotally mounted upon the bracket 31, supported upon the cylindrical casing 1. Journaled within the casing 5, and extending transversely thereof, is a rock-shaft 32, having one end extended beyond the casing and an operating-lever 33 secured to it. A spring-actuated detent 34 is mounted upon the cover 6, and is adapted to engage recesses 36 formed within the lever 33, for holding the latter in three positions, that is, forward, backward, or neutral position, for a purpose which will be later. described.

Keyed upon the rock-shaft is a sleeve 37, having one arm bifurcated, as at 38, for the reception of a pin 39, carried by the rocklever '25, thereby forming a connection between the operating-lever 33 and the rocklever 25, to cause the operation of the brakemechanism by means of the operating-lever.

-A plate 40 is arranged within the casing and adjacent the outer clutch-plate 47, and is actually movable upon the shaft e, and adapted when moved in one direction to give an endwise thrust upon the plates of the clutch-mechanism for frictionally connecting said plates, whereby the internal-gear and the pinion-carrier will be connected and held against relative rotation to cause direct or forward drive of the shaft 6. To effect axial movement of the plate 40, I have provided an actuating-member 41, which encircles the shaft e,.and has two projecting ears 42, which receive between them a projecting stud 43, formed within the bearing 44, of the end-wall 3 of the casing to prevent the rotation of the actuating-member. A stud 45, projects from the lower end of the actuating-member and provides a fulcrum for the said member, when the same is oscillated, as will be later described. Slidably mounted on the shaft 6, is a pair of spaced rings 4646, having a ball-bearing race-way 54, mounted therebetween, and one of the rings 46 rests upon the outer face of the plate 40, and the actuating-member 41 is provided with a pair of lugs 55, which receive pins 56, arranged on and extended inwardly which pins engage the outer face of the ring 46, for the purpose of thrusting said rings 46 inward.

Pivotally secured to an arm 57, formed integral with the sleeve carried by the rockshaft, is a depending link 58, having a roller 59 journaled therein, and journaled Within the upper end .of the actuatingmember 41 is a roller 60, which is adapted to normally rest within the path of the &

roller 59, whereby the latter will cause the actuating-member to move upon its fulcrum. Adjustably mounted-within the end-wall 3 of the casing is a set-screw 61, having a large head 62 to form an abutment arrangedin the path of the roller 59, whereby any wear upon the rollers 59 and 60 is taken up, and said set-screw may be easily operated from the exterior of the inclosing-casing.

From the construction of the inclosingcasing, it is obvious that the end-walls may be easily and readily removed when it is desired to replace or adjust any parts of the reversing-gearing or operating-mechanism within the casing' This casing is also designed to hold grease, whereby the parts thereof will be self-lubricated, and formed within the outer peripheries of the contactingfaces of the pinion-carrier and internalgear is a plurality of circumferential grooves, whereby the oil may travel between the contacting-faces to thoroughly lubricate the same. The gearing is also provided with a number of apertures through which the oil may freely pass, so that all parts of the gearing may be thoroughly and properly lubricated the same, during its operation.

This reversing-gearing is adapted to connect the drive-shaft a, which is to be connected to a suitable motor, whereby the driven-shaft may be disconnected from the drive-shaft where it will be permitted toremain idle. To obtain direct drive of the shaft 6 by the drive-shaft a, through the medium of the reversing-gearing, the operating-lever is moved to the left or in a position as shown in Fig. 1, whereupon the roller 59 will be raised, causing the actuating-member 41 to exert an end-thrust upon the plate 40, thereby operating the clutchmechanism which connects the internal-gear with the pinion-carrier and prevents the internal-gear and the pinion-carrier from relative rotation, so that upon rotation of the spur-gear through the drive-shaft a, the pinions b will be rotated, causing the pinioncarrier to rotate in the same direction with the shaft 0:, and likewise causing the shaft e to rotate in the same direction with the shaft a, or forward direction. When the operating-lever 33, is in a vertical position, which is termed its neutral position, the roller 59 is lowered out of engagement with the roller 60, as shown in dotted lines in Fig. 2, thereby releasing the clutch-mechanism and disconnecting the internal-gear from the pinion-carrier. The rock-lever 25 is then in substantially a horizontal position, the roller is out of contact with the ring 21, and the brake-mechanism is in its normal position, thus permitting the pinion-carrier to freely rotate upon its axis. As the drive-shaft a. is rotated, the pinions will be rotated in an opposite direction and the pinion-carrier will be "caused to rotate in an opposite direction from that of the pinions, whereby the internal-gear will remain idle and likewise the driven-shaft e will remain idle. When the operating-lever 33 is at its extreme left position, as shown in Fig.- 2, the clutchmechanism is released, whereby the internalgear and pinion-carrier are disconnected. The rock-lever 25 is oscillated until it en-' gages the ring 21, which in turn will exert an end-thrust upon the plates of the brakemechanism, whereby the pinion-carrier will be locked stationary with the casing. When the gearing is in this position and the shaft a rotated, the pinions b will rotate upon their axes, thereby causing theinternal-gear to rotate in an opposite direction from that of the spur-gear and in turn the shaft 6 will be driven in a reverse direction.

In using this reversing gearing in connection with marine engines, it has been found to be difiicult to properly place the same in position upon the engine-bed of the boat, so that the engine-shaft and propeller-shaft will be properly connected. In Fig. 7 of the drawings, I have illustrated how the reversing-gearing may be mounted upon the enginebed of a boat, and this construction comprises brackets 65, adapted to be held sta tionary upon the engine-bed by means'of bolts 66, the inner ends of the brackets being provided with grooved clamps 67 for the reception of dovetailed projections 68, carried by the casing inclosing the gearing, and arranged diametrically opposite on each side of the casing. The inner-ends of the brackets are split and have extending therethrough bolts 69, whereby the reversinggearing casing may beretained in its adjusted position. From this it will be seen that the reversing-gearing may be raised and;

lowered upon the engine-bed, and properly presented for position whereby the engineshaft and propeller-shaft may be easily and readily connected.

1. In a reversing-gearing, the combination of a drive-shaft, a driven-shaft, a clutchmechanism for forward drive, gearing including brake-mechanism and a pinion-carrier connecting said shafts for reverse drive,-

actuating-means for said mechanisms, a casing inclosing said mechanisms and their actuating-means, said brake-mechanism comprising a plurality of axially movable plates, oneset of said plates being held against rotation by said casing, and means extending lat erally from said pinion-carrier and connect ing the other set of plates, substantially as described.

2. In a reversing-gearing, the combination of a drive-shaft, a driven-shaft, a spur-gear, a pinion-carrier mounted upon the drivingshaft, pinions carried thereby meshing with said spur-gear, an internal-gear carried the driven-shaft and in mesh with said pinions, a brake-mechanism for stopping the pinion-carrier from rotation, said brakemechanism comprising a plurality of axially movable clutch-plates, one set of clutchplates being held against rotation, pins, ex-

tending laterally from the pinion-carrier and projecting Within openings formed with the other set of clutch-plates, a clutchmechanism for connecting the pinion-carrier with the internal-gear and means for operating the brake-mechanism and clutch-mechanism, substantially as described.

3. A reversing-gearing having clutchmechanism for forward drive, and brakemechanism for reverse drive, separateactuating-means for said mechanisms, a casing inclosing said mechanisms, and their actuating-means, and an operating-lever arranged outside'of the casing with which both actuating-means are connected, substantially as described. 7

4. In a reversing-gearing, the combination of a drive-shaft, a driven-shaft, gearing connecting said shafts including brakemechanism for reverse drive, and clutchmechanism for forward drive, a casing inclosing said gearing, an operating-lever arranged outside the casing, and means a]:- ranged within the casing, for operating the brake-mechanism and the clutch-mechanism, said means being connected with said op erating-lever and adapted to be operated by it, substantially as described.

5. A reversing-gearing having clutchmechanism for forward drive and brakemechanism for reverse drive, separate actuating-means for said mechanisms, a casing inclosing said mechanisms and their actuating-means, a rock-shaft having its bear- 40 ings in the casing, means operatively connecting both actuating-means with said rockshaft, and an operating lever arranged outside of the casing which is connected with said rock-shaft, substantially as described. .45 6. A reversing-gearing having brakemechanism for reverse drive, a movable ring for operating the brake-mechanism, a bracket adjustably mounted upon said ring, and means adapted to engage said bracket so for moving the ring, whereby the brakemechanism may be operated, substantially as described.

7. In a reversing-gearing brake-mechanism for reverse drive comprising a plurality of axially movable clutch-plates, an actuating-member for axiall moving said clutch-plates, and a brac et adjustably mounted upon said actuating-member, substantially as described.

8. In a reversing-gearing, the combina tion of a drive-shaft, a driven-shaft, gearing including brake mechanism connecting sa1d shafts for reverse drive, a clutch-mechanism for forward drive, actuating-means for said mechanisms, a casing incloslng said mechanisms and their actuating-means, an external operating lever supported by the casing to which both actuating-means are connected, said casing having means by which access to its interior may be had, substantially as described.

9. In a reversing-gearing, the combination of a drive-shaft, a drlven-shaft, gearing including brake-mechanism connecting said shafts for reverse drive, a clutch-mechanism for forward drive, actuating-members for operating the clutch-mechanism and brake-mechanism, a casing inclosing the gearing, both mechanisms, and the actuating-members, a rock-shaft journaled within said casing, and means operatively connecting said rock-shaft with said actuatingmembers, whereby, upon the forward rock of the rock-shaft, the clutch-mechanism will be operated, and upon the backward rock 5 of the rock-shaft, the brake-mechanism will be operated, substantially as described.

10. ha reversing-gearing, the combination of a drive-shaft, a driven-shaft, gearing including brake-mechanism connecting said shafts for reverse drive, an actuating-member for operating said brake-mechanism, a

bracket pivotally mounted upon said actuating-member, means carried by the actuating-member for adjusting the bracket, a cas- 5 ing for inclosing'the gearing, means whereby access may be gained into said casing for adjusting said bracket, and means to engage said bracket for operating the brake-mechanism, substantially as described.

11. In a reversing-gearing, the combination of a drive-shaft, a driven-shaft, gearing for reverse drive, a clutch-mechanism for forward drive, said clutch-mechanism comprising a plurality of axially movable plates, an actuating-member pivotany su ported upon one of the shafts for moving said plates, and means adapted to exert a force upon the upper end of the actuating member for moving said plates axially, substantially as described.

12. In a reversing-gearing, the combination of a drive-shaft, a driven-shaft, gearing for reverse drive, a clutch-mechanism for forward drive, said clutch-mechanism comprising a plurality of axially movable plates, an actuating-member encircling the drivenshaft and supported thereby, means for preventing the rotation of said actuating-member, and means for exerting a force upon one end of said actuating-member, whereby the same will move longitudinally to move said clutch-plates, substantially as described.

13. In a reversing-gearing, the combination of a drive-shaft, a driven-shaft, gearing 5 for reverse drive, a clutch-mechanism for forward drive, an actuating-member for operating said clutch-mechanism, a casing for inclosing said gearing, and a roller adapted to travel between said actuating-member and casing for operating the actuating-member, substantially as described.

14. In a reversing-gearing, the combina-' tion of a drive-shaft, a driven-shaft, gearing for reverse drive, a clutch-mechanism for forward drive, an actuating-member for operating said clutch-mechanism, a casing for inclosing said gearing, clutch-mechanism and actuating-member, a roller adapted to travel between the actuating-member and casing for exerting a thrust upon the actuating-member, whereby the clutch-mechanism may be operated, and an adjustable plate mounted within saidcasing and adapted to extend into the path of the roller, substantially as described.

15. In a reversing-gearing, the combination of a drive-shaft, a driven-shaft, caring includingbrake-mechanism for reverse drive, a clutch-mechanism for forward drive, actuating-members for operating the brakemechanism and clutch-mechanism, a rocklever adapted to engage the actuating-member of the brake-mechanism for operating the same, a roller adapted to engage the actuating-member of the clutch-mechanism for operating the same,-and a rock-shaft, connecting said roller and rock-lever, substantially as described.

16. In a reversing-gearing, the combination of a drive-shaft,-a driven-shaft, gearing includingbrake-mechanism for reverse drive, a clutch-mechanism for forward drive, a casing inclosing said gearing and said mechanism, a rock-shaft journaled within said casing, means within the casing operatively arranged to connect said rock-shaft with the brake mechanism and clutch mechanism, whereby the same may be operated, a lever connected to said rock-shaft exteriorly of the casing, and means for locking said lever, whereby the rock-shaft will be held stationary and retain the brake-mechanism in its operative position, substantially as described.

17. In a reversing-gearing, the combinaincluding brake-mechanism for reverse drive, a clutch-mechanism for causing direct drive, a casing for inclosing said gearing and mechanism, a rock-shaft journaled within said casing, and operatively connected 'to said brake mechanism and clutch mechanism by means arranged within the casing, said brake-mechanism and clutch-mechanism remaining idle when the said rock-shaft is in its normal position, means for moving the rock-shaft in one direction from normal to abnormal, whereby the clutch-mechanism will be operated and means for moving the rock-shaft when it is in opposite direction from normal and abnormal position, whereby the brake-mechanism will be operated, substantially as described.

18. In a reversing-gearing, a casing having projections formed upon its opposite tion of a drive-shaft, a driven-shaft, gearing sides, permanently mounted brackets, and

an adjustable connection between the said brackets and projections, substantially as, and for the purpose specified.

19. The combination of a reversing-gearing having a casing inclosing the same, projections formed upon the said casing, brackets rigidly mounted, and means for clamping said bracl rets to said projections, whereby the reversing-gearing casing may be adjusted, substantially as described.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

HENRY A. TUTTLE. 

